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Remove/install tensioning rail - AR05.10-P-8127EL

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ENGINE 157, 276, 278 in MODEL 212, 218 

Fig 1: Tensioning Rail Remove/Install Components
G09974298Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove cylinder heads ENGINE 276.8 left cylinder head AR01.30-P-5780ELS
    ENGINE 276.8 right cylinder head AR01.30-P-5770ELS
    ENGINE 276.9 left cylinder head AR01.30-P-5780EL
    ENGINE 276.9 right cylinder head AR01.30-P-5770EL
    ENGINE 157, 278 left cylinder head AR01.30-P-5780ELB
    ENGINE 157, 278 right cylinder head AR01.30-P-5770ELB
2 Remove timing case cover Engine 276.8 AR01.40-P-8000ELS
    Engine 276.9 AR01.40-P-8000EL
    ENGINE 157, 278 AR01.40-P-8000ELB
3 Remove tensioning rail (1s) and timing chain (3)    
4 Remove slide rail (1g)    
5 Remove chain tensioner (9) and tensioning rail (7) TORQUE SPECIFICATION Screw/bolt, chain tensioner to cylinder crankcase/cylinder head *BA05.10-P-1001-01R 
6 Remove primary chain (5) from intermediate gear (8)    
7 Remove slide rail (6)    
8 Remove intermediate gear (8) TORQUE SPECIFICATION Screw/bolt, journal for intermediate gear to cylinder crankcase *BA05.10-P-1004-01R 
9 Remove tensioning rail (2s) and timing chain (4)    
10 Remove slide rail (2g)    
INSPECT Check     
11 Check chain tensioner (9), tensioning rails (1s, 2s), slide rails (1g, 2g, 6) and intermediate gear (8) for wear, galling and damage    
12 Install in the reverse order    
13 Check cooling system for leaktightness   AR20.00-P-1010EL
DANGER Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
14 Carry out an engine test run and check engine for leaktightness    
TIMING CHAIN, CHAIN TENSIONER

Number Designation ENGINE 157 ENGINE 276
BA05.10-P-1001-01R Screw/bolt, chain tensioner to cylinder crankcase/cylinder head Nm 9 9
TIMING CHAIN, CHAIN TENSIONER

Number Designation ENGINE 278
BA05.10-P-1001-01R Screw/bolt, chain tensioner to cylinder crankcase/cylinder head Nm 9
TIMING CHAIN, CHAIN TENSIONER

Number Designation ENGINE 157 ENGINE 276
BA05.10-P-1004-01R Screw/bolt, journal for intermediate gear to cylinder crankcase M10 Nm 55 55
TIMING CHAIN, CHAIN TENSIONER

Number Designation ENGINE 278
BA05.10-P-1004-01R Screw/bolt, journal for intermediate gear to cylinder crankcase M10 Nm 55